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本帖最后由 yyj 于 2018-1-30 11:01 编辑
6 Y0 M* L2 U1 d6 B4 j5 ~) @ Y- [code]EDMA sample test application' @" `) M0 E! L2 [
- /*' n$ [5 p6 D. q E. b; |# p
- * edma_test.c
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/ j9 b2 ^% R+ @ - * brief EDMA3 Test Application0 ?5 v& M, V! S& s, X
- *, z! _; m2 @* ~& ?# L# N
- * This file contains EDMA3 Test code.
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: }7 x) ]! U6 j+ E5 Q - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE) Q" u5 X" K- ]* o$ _
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT7 W* E4 g/ {2 n" m
- * TO CHANGE.
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6 B$ p. @: @+ G e - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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- * This program is free software; you can redistribute it and/or
. P5 d* D/ k+ r3 R) w a4 p - * modify it under the terms of the GNU General Public License as
# N1 o9 U' w J0 S3 S% P - * published by the Free Software Foundation version 2.5 |8 g+ R$ P( Y* a, r' ~: z. }4 _ A
- *; M6 g1 w% @- z8 B6 ~) L, U* q
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
' D; s7 B7 h0 i. J& f' M - * kind, whether express or implied; without even the implied warranty2 ~" H" p8 g7 b: `) t$ o$ }, y) a
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ~" f' O/ @; V: T+ x) H
- * GNU General Public License for more details.
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- #include <linux/module.h>+ p0 {" w# ^. E* H
- #include <linux/init.h>! Q1 w3 I% i- M' k& t2 V0 D
- #include <linux/errno.h>
8 [9 |& G' R" W8 A$ N6 A: Z, ]; ` - #include <linux/types.h>
8 {' \$ K" F- O - #include <linux/interrupt.h>
5 R* p$ t8 @9 R - #include <asm/io.h>* o/ T" s' R8 f/ I3 n" h# Q9 _, ]8 S
- #include <linux/moduleparam.h>% }$ X+ x0 X. d
- #include <linux/sysctl.h>! n) n! U6 r' {
- #include <linux/mm.h>2 Z8 y9 x9 k/ U2 L/ O* {
- #include <linux/dma-mapping.h>4 m6 U* o7 j5 q% G4 l4 y+ @
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- #include <mach/memory.h>
6 \! v. F* o2 V9 M. v3 A - #include <mach/hardware.h>8 f) L; c P/ m# }' m( H
- #include <mach/irqs.h>
& E6 R+ }9 D0 y/ X" B/ e6 @0 K - #include <asm/hardware/edma.h>2 |8 ]. E4 X# d2 p3 W- K9 H( [& Z4 ?
. c0 I( v4 U/ `5 U- #undef EDMA3_DEBUG. b) T. S$ h$ n5 B3 k
- /*#define EDMA3_DEBUG*/
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% u& k( h1 J. M* ^& s: U' v- #ifdef EDMA3_DEBUG
0 U; u. K+ E6 N - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
8 @6 w, b4 M$ N) F+ i* N3 i' a A6 V - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
7 b- ?* j( L/ j6 w8 @ - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ u1 o$ a* \3 D& ~
- #else \5 D- a o9 [3 j' S- Y2 Y: L* u4 l
- #define DMA_PRINTK( x... )- D# C% y1 P5 p
- #define DMA_FN_IN
3 I9 ~1 s9 C4 A% r/ r! R - #define DMA_FN_OUT0 G: ^% @: r& c; i5 d9 w
- #endif8 }' K" \. ~# {' T* U) {5 U
4 ^* M0 \6 l; J2 N1 f6 p- #define MAX_DMA_TRANSFER_IN_BYTES (32768); m' b9 P5 z) u9 s. ]2 i
- #define STATIC_SHIFT 3/ a9 Q- F- N3 X& g& d9 B
- #define TCINTEN_SHIFT 20
1 ^5 G1 Z5 @! M2 t2 _: q - #define ITCINTEN_SHIFT 21! F8 d7 b- c; ?& I: |
- #define TCCHEN_SHIFT 22- r: P9 [5 n* r7 q/ F1 w V* M
- #define ITCCHEN_SHIFT 23
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2 I. I' c% h7 j+ r5 E9 m5 e9 |- static volatile int irqraised1 = 0;
1 X* [/ u( s# D1 h - static volatile int irqraised2 = 0;, l, X9 p0 z* w( X+ p& z% S
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 U( I' N4 {+ J' `" l( V+ K, {# i
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 b* ?5 C8 ?4 G' U+ k
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 q A y" F+ ~9 D
& Z# N. `' B0 l4 s$ ^& b- dma_addr_t dmaphyssrc1 = 0;
, s* T P% E! ^1 T: O - dma_addr_t dmaphyssrc2 = 0;
) c @, c& ~8 L; d+ U - dma_addr_t dmaphysdest1 = 0;
0 [1 a( A/ m& {& X# T/ a9 D - dma_addr_t dmaphysdest2 = 0;
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) c6 d' q& e7 A! v8 u# }4 j$ ~. _' O- char *dmabufsrc1 = NULL;
, ?5 B: r7 D: q. v1 |# d& p - char *dmabufsrc2 = NULL;
3 G6 [" b5 K v+ F - char *dmabufdest1 = NULL;
4 |; i! X# ^" n1 q! @ - char *dmabufdest2 = NULL;5 M" r9 f n; P% U5 j* ^7 r9 ]4 Q
) L* e: b* d7 y( }! W+ E; N- static int acnt = 512;1 z0 Z1 x+ q, T9 e4 l
- static int bcnt = 8; @! H7 V* f6 n& S" q+ G7 k! q* d
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
! {8 @, N4 ] C+ h - module_param(bcnt, int, S_IRUGO);
& S# d+ b# c5 H1 H8 n, x9 d - module_param(ccnt, int, S_IRUGO);
复制代码
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这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分,我在编译的过程中是用1 d- A. F7 M: q5 M1 N
arm-none-linux-gnueabi-gcc -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译,但是报的错误特别多,我又试着一个函数一个函数往进加,仍然是很多错误。9 {1 F4 J( q7 r; Y) m2 O1 B
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
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